Q.3A) Write Co-relation between the following terms:
1) Ultrasonic sound : Frquency more than 2000 Hz: Infrasonic sound:....
2) Repulsion : Like poles :: Attraction:...
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Q.3A) Write Co-relation between the following terms:
1) Ultrasonic sound : Frquency more than 2000 Hz: Infrasonic sound:....
2) Repulsion : Like poles :: Attraction:...
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Answer:
1. Infrasonic less than 1000Hz
2. Unlike poles
Explanation:
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